| Autor: |
dos Santos, José Ribamar Nascimento, Botelho, Chirlene Nascimento, Caldas, Greicy Kelly Cerqueira, de Menezes, Alan Silva, Kubota, Lauro Tatsuo, Sousa, Janyeid Karla Castro, Damos, Flávio Santos, de Cássia Silva Luz, Rita |
| Předmět: |
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| Zdroj: |
Microchimica Acta; Oct2024, Vol. 191 Issue 10, p1-11, 11p |
| Abstrakt: |
Phloroglucinol (PL) or 1,3,5-trihydroxybenzene is a phenolic compound used therapeutically for its antispasmodic properties. However, an overdose or prolonged exposure to PL can have harmful effects on human health. This work describes for the first time the development of a photoelectrochemical (PEC) sensor to determine PL. The proposed sensor is based on a fluorine-doped tin oxide (FTO) substrate modified with bismuth calcium tantalate (CaBi2Ta2O9), a ceramic perovskite powder, and bismuth vanadate (BiVO4). Both materials were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The morphology of the BiVO4/CaBi2Ta2O9/FTO platform was evaluated using scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The photoelectrochemical response of the platform was evaluated by exploiting with light from a 36 W LED lamp confined in a low-cost homemade box. The BiVO4/CaBi2Ta2O9/FTO sensor showed superior photocurrent response compared to the FTO modified by the individual components (BiVO4/FTO and CaBi2Ta2O9/FTO). Under optimized experimental conditions, the photoelectrochemical sensor showed two linear ranges for PL concentrations ranging from 1 up to 900 μmol L−1 and from 900 up to 2000 μmol L−1, respectively. The BiVO4/CaBi2Ta2O9/FTO sensor exhibited excellent results regarding precision, accuracy, and selectivity for PL detection. PL determination was successfully performed in water and artificial urine samples, with recovery values between 100.1 and 102.2%. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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